<template>
  <div :class="[device === 'mobile' ? 'login mobile-login' : 'login']">
    <div class="login-left">
      <div class="login-left-logo">
        <img :src="siteLogo" />
      </div>
      <div class="login-left-img">
        <img :src="loginMain" />
      </div>
      <img :src="loginBg"
           class="login-left-waves"
           :style="[loginBgRight ? { right: loginBgRight } : '']" />
    </div>
    <div class="login-right flex z-10">
      <div class="login-right-warp flex-margin">
        <h3 class="login-right-warp-main-title">知本科学欢迎您！</h3>
        <div class="login-right-warp-main-form">
          <el-form ref="loginForm"
                   :model="loginForm"
                   :rules="loginRules"
                   class="login-form">
            <el-form-item prop="username">
              <el-input v-model="loginForm.username"
                        type="text"
                        auto-complete="off"
                        placeholder="账号">
                <svg-icon slot="prefix"
                          icon-class="user"
                          class="el-input__icon input-icon" />
              </el-input>
            </el-form-item>
            <el-form-item prop="password">
              <el-input v-model="loginForm.password"
                        type="password"
                        auto-complete="new-password"
                        placeholder="密码"
                        @keyup.enter.native="handleLogin">
                <svg-icon slot="prefix"
                          icon-class="password"
                          class="el-input__icon input-icon" />
              </el-input>
            </el-form-item>
            <el-form-item prop="code"
                          v-if="captchaOnOff">
              <el-input v-model="loginForm.code"
                        auto-complete="off"
                        placeholder="验证码"
                        style="width: 63%"
                        @keyup.enter.native="handleLogin">
                <svg-icon slot="prefix"
                          icon-class="validCode"
                          class="el-input__icon input-icon" />
              </el-input>
              <div class="login-code">
                <img :src="codeUrl"
                     @click="getCode"
                     class="login-code-img" />
              </div>
            </el-form-item>
            <el-checkbox v-model="loginForm.rememberMe"
                         style="margin: 0px 0px 25px 0px"
                         class="remember-checkbox">记住密码</el-checkbox>
            <el-form-item style="width: 100%">
              <el-button :loading="loading"
                         size="medium"
                         type="primary"
                         style="width: 100%"
                         @click.native.prevent="handleLogin"
                         class="login-btn">
                <span v-if="!loading">登 录</span>
                <span v-else>登 录 中...</span>
              </el-button>
              <div style="float: right"
                   v-if="register">
                <router-link class="link-type"
                             :to="'/register'">立即注册</router-link>
              </div>
            </el-form-item>
          </el-form>
        </div>
      </div>
    </div>
    <!--  底部  -->
    <div class="el-login-footer">
      <span>Copyright © 2024-2030 All Rights Reserved.</span>
    </div>
  </div>
</template>

<script>
import { getCodeImg } from "@/api/login";
import Cookies from "js-cookie";
import { encrypt, decrypt } from "@/utils/jsencrypt";
import loginMain from "@/assets/login-img.svg";
import loginBg from "@/assets/login-bg.svg";
import siteLogo from "@/assets/logo-site.png";
import { mapGetters } from "vuex";

import ResizeMixin from "@/layout/mixin/ResizeHandler";
export default {
  name: "Login",
  data () {
    return {
      loginBgRight: "",
      codeUrl: "",
      loginMain,
      loginBg,
      siteLogo,
      loginForm: {
        username: "",
        password: "",
        rememberMe: false,
        code: "",
        uuid: "",
      },
      loginRules: {
        username: [
          { required: true, trigger: "blur", message: "请输入您的账号" },
        ],
        password: [
          { required: true, trigger: "blur", message: "请输入您的密码" },
        ],
        code: [{ required: true, trigger: "change", message: "请输入验证码" }],
      },
      loading: false,
      // 验证码开关
      captchaOnOff: false,
      // 注册开关
      register: false,
      redirect: undefined,
    };
  },
  computed: {
    ...mapGetters(["device"]),
  },
  mixins: [ResizeMixin],
  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect;
      },
      immediate: true,
    },
  },
  created () {
    //this.getCode();
    this.$nextTick(() => {
      this.resizeFun();
      // this.resizeFun窗口变化执行的方法
      window.addEventListener("resize", this.resizeFun);
    });

    this.getCookie();
  },

  beforeDestroy () {
    //离开页面时删除该监听
    window.removeEventListener("resize", this.resizeFun);
  },
  methods: {
    resizeFun () {
      let clientHeight = Number(document.documentElement.clientHeight);
      this.loginBgRight = -Math.floor((100 * clientHeight) / 969) + "px";
      // 窗口变化执行的操作
      console.log(document.documentElement.clientHeight, "????");
    },

    getCode () {
      getCodeImg().then((res) => {
        this.captchaOnOff =
          res.captchaOnOff === undefined ? true : res.captchaOnOff;
        if (this.captchaOnOff) {
          this.codeUrl = "data:image/gif;base64," + res.img;
          this.loginForm.uuid = res.uuid;
        }
      });
    },
    getCookie () {
      const username = Cookies.get("username");
      const password = Cookies.get("password");
      const rememberMe = Cookies.get("rememberMe");
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password:
          password === undefined ? this.loginForm.password : decrypt(password),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
      };
    },
    handleLogin () {
      this.$refs.loginForm.validate((valid) => {
        if (valid) {
          this.loading = true;
          if (this.loginForm.rememberMe) {
            Cookies.set("username", this.loginForm.username, { expires: 30 });
            Cookies.set("password", encrypt(this.loginForm.password), {
              expires: 30,
            });
            Cookies.set("rememberMe", this.loginForm.rememberMe, {
              expires: 30,
            });
          } else {
            Cookies.remove("username");
            Cookies.remove("password");
            Cookies.remove("rememberMe");
          }
          this.$store
            .dispatch("Login", this.loginForm)
            .then(() => {
              this.$router.push({ path: this.redirect || "/index" }).catch(() => { });
            })
            .catch((e) => {
              this.loading = false;
              if (this.captchaOnOff) {
                this.getCode();
              }
            });
        }
      });
    },
  },
};
</script>
<style rel="stylesheet/scss" lang="scss">
.remember-checkbox {
  .el-checkbox__input.is-checked + .el-checkbox__label {
    color: #167dd7;
  }
  .el-checkbox__input.is-checked .el-checkbox__inner,
  .el-checkbox__input.is-indeterminate .el-checkbox__inner {
    background-color: #167dd7;
    border-color: #167dd7;
  }
}
</style>
<style rel="stylesheet/scss" lang="scss" scoped>
@media screen and (max-width: 992px) and (min-width: 576px) {
  .login {
    .login-left {
      .login-left-img {
        top: 90% !important;
        left: 12% !important;
        width: 30% !important;
        height: 18% !important;
        padding: 0 40px !important;
      }
    }
    .login-right {
      .login-right-warp {
        width: 400px !important;
      }
      // position: absolute;
      // top: 50%;
      // left: 50%;
      // transform: translate(-50%, -50%);
    }
  }
}

.login-btn {
  background-color: #167dd7;
  border-color: #167dd7;
}

.mobile-login {
}

.login {
  display: flex;

  height: 100%;
  .login-left {
    flex: 1;
    position: relative;
    background-color: rgb(211, 239, 255);
    margin-right: 100px;

    .login-left-logo {
      display: flex;
      align-items: center;
      position: absolute;
      top: 50px;
      left: 80px;
      z-index: 1;
      img {
        height: 30px;
      }
    }

    .login-left-img {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 100%;
      height: 52%;
      padding: 0 70px;
      img {
        width: 100%;
        height: 100%;
      }
    }
    .login-left-waves {
      display: block;
      position: absolute;
      top: 0;
      right: -94px;
      height: 100%;
    }
  }
  .login-right {
    display: flex;
    width: 50%;
    .login-right-warp {
      display: flex;
      flex-direction: column;
      align-items: center;
      border: 1px solid #167dd7;
      border-radius: 3px;
      width: 500px;
      height: 500px;
      position: relative;
      overflow: hidden;
      background-color: #fff;
      margin: auto;
      .login-right-warp-main-form {
        flex: 1;
        padding: 0 50px 50px;
      }
    }
  }
}

.mobile-login {
  position: relative;
  flex-direction: column;
  .login-left {
    .login-left-logo {
      top: 20px;
      left: 20px;
    }
  }

  .login-right {
    position: absolute;
    top: 80px;
    left: 50px;
    right: 50px;
    bottom: 100px;
    width: auto;
    .login-right-warp {
      width: auto;
      .login-right-warp-main-form {
        padding: 0 30px 20px;
      }
    }
  }
  .login-form {
    display: flex;
    flex-direction: column;
    width: 100%;
    padding: 25px 0 0 0;
  }
}
.login-right-warp-main-title {
  height: 130px;
  line-height: 130px;
  font-size: 20px;
  text-align: center;
  letter-spacing: 3px;

  animation-delay: 0.3s;
  color: #303133;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;
  .el-input {
    height: 38px;
    input {
      height: 38px;
    }
  }
  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 2px;
  }
}
.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}
.login-code {
  width: 33%;
  height: 38px;
  float: right;
  img {
    cursor: pointer;
    vertical-align: middle;
  }
}
.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}
.login-code-img {
  height: 38px;
}
</style>
